Here is the latest update from a previous post on where the A321Ts currently are (active/storage, etc) as of 16 Mar 2021.

8 aircraft that are currently operating
8 aircraft that are likely in storage
1 aircraft that will be scrapped

(data from FlightAware & FlightRadar24)
N101NN: Currently operating transcontinental flights
N102NN: Has resumed transcon flights
N103NN: Ferried to San Antonio on 5-Nov-2020 as AA9793 - Likely in storage
N104NN: Currently operating transcontinental flights

N105NN: Ferried to San Antonio on 5-Nov-2020 as AA9787 - Likely in storage
N106NN: Has resumed transcon flights
N107NN: Has resumed transcon flights
N108NN: Ferried to San Antonio on 6-Nov-2020 as AA9797 - Likely in storage

N109NN: Ferried to Charlotte on 08-Mar-2021 as AA 9787 - Likely in storage
N110AN: Ferried to San Antonio on 4-Nov-2020 as AA9787 - Likely in storage
N111ZM: Ferried to San Antonio on 4-Nov-2020 as AA9794 - Likely in storage
N112AN: Has resumed transcon flights

N113AN: Currently operating transcontinental flights
N114NN: Stored at New York JFK after incident in April 2019 - Will be scrapped [img]blob:https://www.flyertalk.com/3976618b-d15c-4495-b11b-a80f189229b7[/img]
N115NN: Ferried to San Antonio on 4-Nov-2020 as AA9792 - Likely in storage
N116AN: Stored in Davis, CA as of 20-Nov-2020

N117AN: Currently operating transcontinental flights